While the anatomy of the coronary arteries in complete transposition of the great vessels has been studied by several authors, the overall problem of adequacy of the coronary blood supply in this condition has received less attention. Spitzer (1923) described the probable embryological basis for partial or complete transposition of the coronary arteries. Astley and Parsons (1952) thought that m...

When administered intravenously to conscious dogs, nicorandil, nitrovasodilators (nitroglycerin and SIN-1), and the K(+)-channel opener cromakalim exhibited marked differential effects on large epicardial and small resistance coronary arteries. Nitrovasodilators markedly increased the left circumflex coronary artery diameter at doses at which coronary resistance was not significantly decreased....

Widespread anastomoses of the auricular branches and the coronary branches to the pericardial fat with the pericardiacophrenic branches of the internal mammary arteries and the anterior mediastinal, pericardial, bronchial, superior and inferior phrenic, intercostal and esophageal branches of the aorta have been described. The most extensive anastomoses between the cardiac and extracardiac vesse...

Although dual left anterior descending arteries are found in about 1% of the population, identification and localization these coronaries remains a challenge for cardiac surgeons throughout coronary artery bypass graft surgery. We present case (LAD) disease highlight techniques used identifying vessels.

Assessment of coronary artery stenosis severity depends on either determination of the anatomic dimensions of the stenosis by angiographic techniques or assessment of the functional significance of the stenosis by measurement of its effect on blood flow. Measurement of myocardial blood flow during maximal pharmacological vasodilation (vasodilator reserve) has been used to examine the functional...

Nitric oxide (NO)-induced coronary vasodilation is mediated through production of cyclic guanosine monophosphate (cGMP) and through inhibition of the endothelin-1 (ET) system. We previously demonstrated that phosphodiesterase-5 (PDE5)-mediated cGMP breakdown and ET each exert a vasoconstrictor influence on coronary resistance vessels. However, little is known about the integrated control of cor...

A 61-year old woman with severe coronary artery disease underwent three-vessel coronary bypass surgery. Difficulty was encountered in terminating cardiopulmonary bypass, but there was dramatic improvement following the administration of intravenous insulin. The use of insulin to facilitate termination of cardiopulmonary bypass is discussed.

Background and Objectives: In spite of large number of studies conducted so far, sudden cardiac death remains an enigma and relative importance of acute coronary events as a trigger of sudden death is currently unclear. An autopsy study of heart was therefore planned to observe various histomorphological cardiac changes, and to determine the frequency association of acute coronary events and my...

survey of anatomic variations of coronary arteries is the most fundamental of researches in the field of these vessels. for performing this survey, coronary arteries (ca's) of 463 human heart cases (gathered from three different surces: 1) legal medicine center corpses, 2) cadavers of dissection rooms in medical schools, and 3) ca's angiographic films from hospital centers) were studi...

In a study of 1000 consecutive coronary arteriograms, 12 patients (all men) had coronary artery ectasia. Ectasia was found most frequently in the circumflex or right coronary artery. Only 1 patient had ectasia in the left anterior descending coronary artery. In 11 patients, ectasia of one artery was associated with severe stenosis or occlusion of other vessels, typical of arteriosclerosis. Hist...